diff --git a/.github/workflows/check_style.yml b/.github/workflows/check_style.yml
index 9c5ffc6..d66557d 100644
--- a/.github/workflows/check_style.yml
+++ b/.github/workflows/check_style.yml
@@ -50,7 +50,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: ~/.conan/data
-          key: check-style-${{ runner.os }}-${{ hashFiles('**/conanfile.py') }}
+          key: conan-${{ runner.os }}-${{ hashFiles('**/conanfile.py') }}
 
       - name: apt cache
         uses: actions/cache@v4     
@@ -58,7 +58,7 @@ jobs:
           path: |
             /var/cache/apt/
             /var/lib/apt/
-          key: apt-${{ runner.os }}-${{ github.job }}-${{ hashFiles('**/install_deps_ubuntu.sh') }}
+          key: apt-${{ runner.os }}-${{ github.job }}
 
       - name: Set up Python
         uses: actions/setup-python@v4
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 8055220..50b4687 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -44,7 +44,7 @@ jobs:
           path: |
             /var/cache/apt/
             /var/lib/apt/
-          key: apt-${{ runner.os }}-${{ github.job }}-${{ hashFiles('**/install_deps_ubuntu.sh') }}
+          key: apt-${{ runner.os }}-${{ github.job }}
 
       - name: Set up Python
         uses: actions/setup-python@v4
diff --git a/.github/workflows/test_conan.yml b/.github/workflows/test_conan.yml
index 88b2993..087d662 100644
--- a/.github/workflows/test_conan.yml
+++ b/.github/workflows/test_conan.yml
@@ -40,7 +40,7 @@ jobs:
           path: |
             /var/cache/apt/
             /var/lib/apt/
-          key: apt-${{ runner.os }}-${{ github.job }}-${{ hashFiles('**/install_deps_ubuntu.sh') }}
+          key: apt-${{ runner.os }}-${{ github.job }}
 
       - name: Set up Python
         uses: actions/setup-python@v4
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 3f9a2cd..c66c4e1 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -4,7 +4,7 @@ This page describes rules to contribute changes and features by Pull Requests cr
 
 To initialize your repo do:
 
-* Make fork from `https://github.com/ostis-ai/scp-machine`.
+* Fork `https://github.com/ostis-ai/scp-machine`.
 * Clone your fork to your machine and prepare (see [Readme](https://github.com/ostis-ai/scp-machine)).
 
 ```sh
@@ -20,8 +20,7 @@ git fetch upstream
 git checkout upstream/main
 ```
 
-* Use `git rebase` instead of `merge`. [More documentation about this command](https://git-scm.com/docs/git-rebase)
-just try to apply your commits (from current branch to commits in specified branch). To rebase your branch to main use:
+* Use `git rebase` instead of `merge`. See [documentation about this command](https://git-scm.com/docs/git-rebase). To rebase your branch against main use:
 
 ```sh
 git checkout <yourbranch>
@@ -40,13 +39,12 @@ git rebase --abort
 
 Each commit message should be formed as: `[tag1]...[tagN] Message text (#issue)`.
 
-Message text should start from an upper case letter. If commit doesn't fix or implement any #issue, then it shouldn't 
-be pointed in commit message.
+Message text should start from an upper case letter. If commit doesn't fix or implement any #issue, then it shouldn't be pointed in commit message.
 
 Examples:
 <pre>
-[cpp] Colored log output
-[cpp][test] Add unit test for ScEvent class
+[scp] Implement contErase operator 
+[docs] Add examples of using contErase operator
 </pre>
 
 Possible tags:
@@ -63,18 +61,18 @@ Possible tags:
   * `[ci]` - changes in `ci` configuration or scripts;
   * `[git]` - changes in `git` configuration;
 
-Each commit in Pull Request should be an atomic. Another word implement or fix one feature. For example:
+Each commit in Pull Request should be an atomic. In other words, it should implement or fix one feature. For example:
+
 <pre>
 Last commit
 ...
-[cpp] Colored log output
-[cpp] Add class to work with console
+[tests] Test contErase operator
+[changelog] Add info about contErase operator
 ...
 Init commit
 </pre>
 
-In this example we add class to work with console (where implemented colored output), then in another commit we had 
-implementation of colored log output.
+In this example we add class to work with console (where implemented colored output), then in another commit we add gimplementation of colored log output.
 
 ***
 Each commit should have not much differences excluding cases, with:
@@ -91,14 +89,14 @@ Each commit should have not much differences excluding cases, with:
 
 **Do not mix codestyle changes and any logical fixes in one commit.**
 
-All commit, that not applies to this rules, should be split by this rules. Another way they will be rejected with Pull request.
+All commits that not follow these rules should be split according to these rules. Otherwise they will be rejected with Pull Request.
 
 ***
-## Pull request
+## Pull Request
 
-Each pull request with many changes, that not possible to review (excluding codestyle, rename changes), will be rejected.
+Each Pull Request with many changes, that not possible to review (excluding codestyle, rename changes), will be rejected.
 
-_**All commit, that not applies to these rules, should be split by these rules. Another way they will be rejected with Pull request.**_
+_**All commit, that not applies to these rules, should be split by these rules. Another way they will be rejected with Pull Request.**_
 
 ### Pull Request Preparation
 
diff --git a/scripts/install_deps_macOS.sh b/scripts/install_deps_macOS.sh
deleted file mode 100755
index 379696a..0000000
--- a/scripts/install_deps_macOS.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-set -eo pipefail
-
-brew install googletest
diff --git a/scripts/install_deps_ubuntu.sh b/scripts/install_deps_ubuntu.sh
deleted file mode 100755
index cd15d41..0000000
--- a/scripts/install_deps_ubuntu.sh
+++ /dev/null
@@ -1,47 +0,0 @@
-#!/usr/bin/env bash
-set -eo pipefail
-
-function usage() {
-  cat <<USAGE
-Usage: $0 [--dev]
-Options:
-  --dev:          Installs dependencies required to compile scp-machine
-USAGE
-  exit 1
-}
-packagelist_runtime=(
-libgtest-dev
-)
-
-packages=()
-packages+=("${packagelist_runtime[@]}")
-while [ "$1" != "" ]; do
-  case $1 in
-  --dev)
-    packages+=("${packagelist_dev[@]}")
-    ;;
-  -h | --help)
-    usage # show help
-    ;;
-  *)
-    usage
-    exit 1
-    ;;
-  esac
-  shift 1 # remove the current value for `$1` and use the next
-done
-if ! command -v apt> /dev/null 2>&1;
-then
-  RED='\033[22;31m'
-  NC='\033[0m' # No Color
-  echo -e "${RED}[ERROR] Apt command not found. Debian-based distros are the only officially supported.
-Please install the following packages by yourself:
-  ${packages[*]}
-  ${NC}"
-  exit 1
-fi
-sudo apt-get update && sudo apt-get install -y --no-install-recommends software-properties-common
-sudo add-apt-repository -y universe
-sudo apt-get update
-sudo apt-get install -y --no-install-recommends "${packages[@]}"
-sudo apt autoremove